I have a controller for editing a treeview. The view contains a grid with the fields of the node.
The node has a list of groups that can be selected in MultiSelectFor “Gruops”.
A node should have only those groups that its parent has.
Therefore, after selecting a new parent in the parent list "Parent", "Gruops" should contain only the groups of the selected parent.
I implement this with an event "onChange".
After choosing a new parent, the list of groups of this parent falls into the "Groups". But the "Groups" are not updated (see. image).